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A024800
a(n) = position of 3*(n^2) in A000408.
0
1, 5, 14, 28, 48, 73, 103, 138, 179, 226, 277, 333, 395, 461, 531, 608, 691, 777, 869, 966, 1068, 1175, 1287, 1403, 1526, 1653, 1783, 1921, 2063, 2209, 2362, 2518, 2682, 2849, 3022, 3197, 3378, 3567, 3759, 3956, 4160, 4366, 4578, 4795, 5018, 5245, 5476, 5713
OFFSET
1,2
CROSSREFS
Cf. A000408.
Sequence in context: A301294 A073347 A134238 * A005586 A197058 A212678
KEYWORD
nonn
EXTENSIONS
Corrected and extended by David W. Wilson, May 15 1997
STATUS
approved