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 A004161 Tetrahedral numbers written backwards. 1
 0, 1, 4, 1, 2, 53, 65, 48, 21, 561, 22, 682, 463, 554, 65, 86, 618, 969, 411, 331, 451, 1771, 4202, 32, 62, 5292, 6723, 4563, 604, 5944, 694, 6545, 4895, 5456, 417, 777, 6348, 9319, 889, 6601, 8411, 14321, 44231, 9141, 8151, 51261, 69271, 42481, 691, 52802 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Sorted: 0, 1, 2, 4, 21, 22, 32, 48, 53, 62, 65, 86, 122, 307, 331, 411, 417, 451, 463, 554, 561, 604, 618, 682, 691, 694, 777, 889, 969, 1771, ..., . - Robert G. Wilson v, Feb 24 2010 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..10000 MAPLE a:= n-> (s-> parse(cat(s[-i]\$i=1..length(s))))(""||(binomial(n+2, 3))): seq(a(n), n=0..50);  # Alois P. Heinz, Apr 09 2015 MATHEMATICA f[n_] := FromDigits@ Reverse@ IntegerDigits[n (n + 1) (n + 2)/6]; Array[f, 49] (* Robert G. Wilson v, Feb 24 2010 *) CROSSREFS Cf. A000292. Sequence in context: A072033 A159766 A280284 * A303141 A246070 A202778 Adjacent sequences:  A004158 A004159 A004160 * A004162 A004163 A004164 KEYWORD nonn,base,look AUTHOR EXTENSIONS a(33)-a(49) from Robert G. Wilson v, Feb 24 2010 STATUS approved

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Last modified October 19 20:47 EDT 2019. Contains 328224 sequences. (Running on oeis4.)