30.
first triple digit pentagonal pyramidal number is 126
ANSWER: The next composite number after 12 is 14.
pyramidal
14 x 14 = 196
It is 15
In mathematics, a pyramid number, or square pyramidal number, is a number that represents the number of stacked spheres in a pyramid with a square base.The first few square pyramidal numbers are:1, 5, 14, 30, 55, 91, 140, 204, 285, 385, 506, 650, 819
No, the sequence 1, 1, 2, 3, 5 is not a pyramidal sequence; it is known as the Fibonacci sequence. In a pyramidal sequence, each term typically represents a figurate number, such as triangular or square numbers, which can be arranged in a geometric shape. The Fibonacci sequence, on the other hand, is generated by adding the two preceding numbers to get the next one.
The next number works out as 365
14 20.02.18.04.16.06.14.08.12.10.10.12.08.14.06.16.04.18.02.20
This describes a four-sided pyramid.
14
The next number is 10. The pattern is -7, -6, -5, -4.