A081958 Diagonal of A081957.
2, 8, 36, 180, 1080, 7560, 60480, 524160, 5241600, 56609280, 670602240, 8622028800, 118879488000, 1793381990400, 28158588057600, 474249904128000, 8447576417280000, 159659194286592000, 3162772610629632000, 66117689869271040000, 1445143792856924160000
Offset: 1
Keywords
Links
- James Rayman, Table of n, a(n) for n = 1..400
Programs
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Python
def a(n): return row(n)[-1] # row(n) is given in A081957. - James Rayman, Jan 17 2021
Extensions
Corrected and extended by Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 08 2003
a(11)-a(19) from James Rayman, Jan 16 2021
Corrected and extended by James Rayman, Jan 17 2021