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Search: id:A061792
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| 6, 55, 153, 300, 496, 741, 1035, 1378, 1770, 2211, 2701, 3240, 3828, 4465, 5151, 5886, 6670, 7503, 8385, 9316, 10296, 11325, 12403, 13530, 14706, 15931, 17205, 18528, 19900, 21321, 22791, 24310, 25878, 27495, 29161, 30876, 32640, 34453
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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"If n is a triangular number, then so are 9n+1, 25n+3 and 49n+6. (Euler, 1775)." Burton, p. 17.
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REFERENCES
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D. M. Burton, Elementary Number Theory, Allyn and Bacon, Inc. Boston, MA, 1976, pp. 17.
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LINKS
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Harry J. Smith, Table of n, a(n) for n=0,...,1000
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PROGRAM
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(PARI) v=[]; for(n=0, 100, v=concat(v, 49*(n*(n+1)/2)+6)); v
(PARI) { for (n=0, 1000, write("b061792.txt", n, " ", 49*n*(n + 1)/2 + 6) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 28 2009]
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CROSSREFS
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Cf. A000217.
Sequence in context: A085067 A069508 A079465 this_sequence A066514 A009577 A097300
Adjacent sequences: A061789 A061790 A061791 this_sequence A061793 A061794 A061795
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KEYWORD
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easy,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jun 22 2001
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