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A218753
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a(n) = (49^n-1)/48.
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35
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0, 1, 50, 2451, 120100, 5884901, 288360150, 14129647351, 692352720200, 33925283289801, 1662338881200250, 81454605178812251, 3991275653761800300, 195572507034328214701, 9583052844682082520350, 469569589389422043497151
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OFFSET
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0,3
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COMMENTS
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Partial sums of powers of 49 (A087752).
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LINKS
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FORMULA
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MATHEMATICA
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Join[{0}, Accumulate[49^Range[0, 20]]] (* Harvey P. Dale, Apr 14 2023 *)
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PROG
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(Magma) [n le 2 select n-1 else 50*Self(n-1) - 49*Self(n-2): n in [1..20]]; // Vincenzo Librandi, Nov 08 2012
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CROSSREFS
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Cf. A000225, A003462, A002450, A003463, A003464, A023000, A023001, A002452, A002275, A016123, A016125, A091030, A135519, A135518, A131865, A091045, A218721, A218722, A064108, A218724-A218734, A132469, A218736-A218752, A133853, A094028, A218723.
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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