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A070863 Sum of numbers in n-th row of A070861. 2
1, 3, 12, 60, 360, 2268, 18144, 152544, 1471008, 14963328, 179559936, 2156963328, 30197486592, 426680825088, 6448500066288, 103658110188528, 1865845983393504, 33623263082197152, 672465261643943040, 13457623759369050240, 283699943666342340480 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..21.

MATHEMATICA

row[n_] := Times @@@ Subsets[Range[n]] // Flatten // Union; a[n_] := Total[row[n]]; Table[an = a[n]; Print["a(", n, ") = ", an]; an, {n, 1, 19}] (* Jean-Fran├žois Alcover, Feb 02 2015 *)

CROSSREFS

Cf. A070861, A060957.

Sequence in context: A140097 A105227 A000258 * A180707 A062569 A089057

Adjacent sequences:  A070860 A070861 A070862 * A070864 A070865 A070866

KEYWORD

nonn

AUTHOR

Amarnath Murthy, May 16 2002

EXTENSIONS

Corrected and extended by Lior Manor May 26 2002

STATUS

approved

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Last modified December 9 16:14 EST 2016. Contains 278985 sequences.