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 A110369 (Digit 1 repeated n times) + n. 2
 2, 13, 114, 1115, 11116, 111117, 1111118, 11111119, 111111120, 1111111121, 11111111122, 111111111123, 1111111111124, 11111111111125, 111111111111126, 1111111111111127, 11111111111111128, 111111111111111129, 1111111111111111130 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Partial sums of A062397. - Klaus Purath, Mar 18 2021 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 FORMULA a(n) = A002275(n) + n. - Michel Marcus, Mar 04 2018 a(n) = (10^n - 1)/9 + n. - Klaus Purath, Mar 18 2021a(n) = EXAMPLE a(12) = 111111111111 + 12 = 111111111123. MATHEMATICA Table[FromDigits[PadRight[{}, n, 1]]+n, {n, 20}] (* Harvey P. Dale, May 15 2019 *) PROG (Sage) [gaussian_binomial(n, 1, 10)+n for n in range(1, 20)] # Zerinvary Lajos, May 29 2009 CROSSREFS Cf. A002275 (repunits). Sequence in context: A247153 A088604 A127891 * A212071 A258620 A209174 Adjacent sequences: A110366 A110367 A110368 * A110370 A110371 A110372 KEYWORD base,easy,nonn AUTHOR Amarnath Murthy, Jul 24 2005 EXTENSIONS More terms from Joshua Zucker, May 08 2006 An incorrect recurrence was deleted by N. J. A. Sloane, Sep 13 2009 STATUS approved

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Last modified May 20 23:09 EDT 2024. Contains 372720 sequences. (Running on oeis4.)