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A139610 a(n) = 45*n + 10. 2
10, 55, 100, 145, 190, 235, 280, 325, 370, 415, 460, 505, 550, 595, 640, 685, 730, 775, 820, 865, 910, 955, 1000, 1045, 1090, 1135, 1180, 1225, 1270, 1315, 1360, 1405, 1450, 1495, 1540, 1585, 1630, 1675, 1720, 1765, 1810, 1855, 1900 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Numbers of the 10th column of positive numbers in the square array of nonnegative and polygonal numbers A139600.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..5000

Index to sequences related to polygonal numbers

Index entries for linear recurrences with constant coefficients, signature (2,-1).

FORMULA

a(n) = A057145(n+2,10).

G.f.: 5*(2+7*x)/(x-1)^2. - R. J. Mathar, Jul 28 2016

PROG

(MAGMA) [5*(9*n + 2): n in [0..60]]; // Vincenzo Librandi, Jul 23 2011

(PARI) a(n)=45*n+10 \\ Charles R Greathouse IV, Oct 05 2011

CROSSREFS

Sequence in context: A219623 A284757 A303608 * A088404 A119334 A321780

Adjacent sequences:  A139607 A139608 A139609 * A139611 A139612 A139613

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol, Apr 27 2008

STATUS

approved

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Last modified October 18 22:03 EDT 2019. Contains 328211 sequences. (Running on oeis4.)