A374501 Pentagonal pyramidal numbers that are products of smaller pentagonal pyramidal numbers.

1, 56448, 127008, 259200, 5644800, 31840200, 42688800, 60766200, 116493300, 130662720, 193179168, 442828800, 499000500, 897544800, 917632800, 3624409800, 6914880000, 13831171200, 15410656800, 31246000128, 53936416800, 64024732800, 72945774720, 88957620000

Offset: 1

Author

Pontus von Brömssen, Jul 09 2024

Keywords

• nonn

Examples

			1 is a term because it is a pentagonal pyramidal number and equals the empty product.
56448 is a term because it is a pentagonal pyramidal number and equals the product of the pentagonal pyramidal numbers 196 and 288.
127008 is a term because it is a pentagonal pyramidal number and equals the product of the pentagonal pyramidal numbers 6, 6, 18, and 196.
		

Crossrefs

Row n=5 of A374498.

Cf. A002411, A374500, A374502.