1,2
Table of n, a(n) for n=1..14.
a(n) = A000203(n) * A024916(n) = row sums of triangle A143237.
a(4) = 105 = A000203(4) * A024916(4) = 7 * 15.
a(4) = 105 = sum of row 4 terms of triangle A143237: (7, + 21, + 28 + 49).
Cf. A000203, A024916, A143237.
Sequence in context: A183682 A194644 A068381 * A102091 A045669 A045660
Adjacent sequences: A143235 A143236 A143237 * A143239 A143240 A143241
nonn
Gary W. Adamson, Aug 01 2008
approved