A077541 a(n) = A077540(n) / Pr(n), where Pr(n) = product of next n numbers; e.g., Pr(3) = 4*5*6.

2, 20, 42, 1144, 855820800, 262018681981056000, 3024349375401446400, 69337295495058784057663518720000, 629814675503152446257282529444145220522877366199910400000000, 85063131647062527147287270073846062882766625767592796281697754182320128000000000

Offset

1,1

Links

Table of n, a(n) for n=1..10.

Crossrefs

Cf. A077540, A077542.

Sequence in context: A357485 A194999 A280436 * A266842 A254542 A202602

Adjacent sequences: A077538 A077539 A077540 * A077542 A077543 A077544

Keyword

nonn

Author

Amarnath Murthy, Nov 09 2002

Extensions

Corrected and extended by Ray Chandler, Aug 23 2003

Original data restored and extended by Sean A. Irvine, May 28 2025

Status

approved