A215836 Sixth derivative of f_n at x=1, where f_n is the n-th of all functions that are representable as x^x^...^x with m>=1 x's and parentheses inserted in all possible ways.

0, 54, 1188, 954, 8322, 4908, 5034, 2934, 31776, 17742, 10428, 13968, 8688, 15174, 8814, 6714, 4374, 87990, 50496, 29682, 35382, 24042, 22008, 14928, 31968, 20268, 14988, 10848, 34974, 21474, 13314, 15114, 10974, 13014, 8874, 6534, 5094, 200244, 120330, 72456

Offset

1,2

Comments

For the ordering of functions f_n see A215703.

Links

Alois P. Heinz, Table of n, a(n) for n = 1..7813

Maple

# load programs from A215703, then:
seq(A(6, n), n=1..100);

Crossrefs

Row n=6 of A215703.

Number of distinct values of a(n) taken for functions with m x's: A199883.

Cf. A000081, A087803.

Sequence in context: A341940 A190399 A071803 * A160289 A341561 A079876

Adjacent sequences: A215833 A215834 A215835 * A215837 A215838 A215839

Keyword

nonn

Author

Alois P. Heinz, Aug 24 2012

Status

approved