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 A221563 Triangular numbers representable as t*p, where t>1 is a triangular number, p>1 is a prime power (A025475). 0
 120, 528, 1485, 3240, 58653, 70125, 139128, 609960, 886446, 902496, 1062153, 1844160, 4017195, 8386560, 8759205, 38618866, 39760903, 122062500, 160554240, 703893960, 741105750, 797222415, 6115239936, 10854464130, 23667373395, 82103447700, 131197213890 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..27. EXAMPLE Triangular(32) = 528 = 66 * 8, because 66 is a triangular number and 8 is a prime power, 528 is in the sequence. Triangular(54) = 1485 = 55 * 27, because 55 is a triangular number and 27 is a prime power, 1485 is in the sequence. CROSSREFS Cf. A000217, A025475, A029549. Sequence in context: A157960 A067915 A305072 * A336626 A241613 A115619 Adjacent sequences: A221560 A221561 A221562 * A221564 A221565 A221566 KEYWORD nonn AUTHOR Alex Ratushnyak, May 03 2013 STATUS approved

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Last modified February 21 06:10 EST 2024. Contains 370219 sequences. (Running on oeis4.)