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 A339311 a(n) = Sum_{k=1..n} (k!)^n. 3
 1, 5, 225, 333089, 24891170433, 139317055679149697, 82606511560391889386751489, 6984964663477899063759529684476994049, 109110688697205077023425816926479750793809817618433, 395940866162019279867473563258123776010342586429441374123441432577 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Seiichi Manyama, Table of n, a(n) for n = 1..30 MATHEMATICA a[n_] := Sum[(k!)^n, {k, 1, n}]; Array[a, 10] (* Amiram Eldar, Apr 28 2021 *) PROG (PARI) {a(n) = sum(k=1, n, k!^n)} CROSSREFS Sum_{k=1..n} (k!)^m: A007489 (m=1), A104344 (m=2), A138564 (m=3), A289945 (m=4), A316777 (m=5), A289946 (m=6). Cf. A000142, A112999. Sequence in context: A185551 A324098 A263430 * A200988 A201491 A181584 Adjacent sequences: A339308 A339309 A339310 * A339312 A339313 A339314 KEYWORD nonn AUTHOR Seiichi Manyama, Nov 29 2020 STATUS approved

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Last modified August 8 07:25 EDT 2024. Contains 375020 sequences. (Running on oeis4.)