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 A176660 Partial sums of A038772. 0
 23, 50, 79, 113, 150, 188, 231, 277, 324, 373, 426, 480, 536, 593, 651, 710, 777, 845, 914, 987, 1061, 1137, 1215, 1294, 1377, 1463, 1550, 1639, 1733, 1830, 1928, 2131, 2338, 2547, 2770, 2997, 3226, 3459, 3698, 3945, 4194, 4447, 4704, 4963, 5226, 5493 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Partial sums of numbers not divisible by any of their digits. The partial sums of the complement (A038770, numbers divisible by at least one of their digits) is A176659. Hence the sum of the two partial sums (properly offset) is triangular numbers A000217. The subsequence of primes in the partial sum begins: 23, 79, 113, 277, 373, 593, 1061, 1733, 2131, 4447, 9479. The smallest square in the sequence is 324. LINKS FORMULA a(n) = SUM[i=1..n] A038772(i). EXAMPLE a(4) = 23 + 27 + 29 + 34 = 113 is prime. CROSSREFS Cf. A038772, 034709, A034837, A038769, A038770, A176659. Sequence in context: A132764 A029493 A063321 * A185187 A157095 A281266 Adjacent sequences:  A176657 A176658 A176659 * A176661 A176662 A176663 KEYWORD base,easy,nonn AUTHOR Jonathan Vos Post, Apr 23 2010 STATUS approved

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Last modified July 21 04:40 EDT 2019. Contains 325189 sequences. (Running on oeis4.)