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A154600 2n^2 + 22n + 9. 1
33, 61, 93, 129, 169, 213, 261, 313, 369, 429, 493, 561, 633, 709, 789, 873, 961, 1053, 1149, 1249, 1353, 1461, 1573, 1689, 1809, 1933, 2061, 2193, 2329, 2469, 2613, 2761, 2913, 3069, 3229, 3393, 3561, 3733, 3909, 4089, 4273, 4461, 4653, 4849, 5049, 5253 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Eleventh diagonal of A144562; 2*a(n)+103 is a square.

LINKS

Index to sequences with linear recurrences with constant coefficients, signature (3,-3,1).

PROG

(PARI) a(n)=2*n*(n+22)+9 \\ Charles R Greathouse IV, Jan 11 2012

CROSSREFS

Sequence in context: A043983 A080673 A140156 * A100593 A115160 A053179

Adjacent sequences:  A154597 A154598 A154599 * A154601 A154602 A154603

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 12 2009

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.