A276447 Numbers n for which A272565(n) < A020639(n).

19, 31, 49, 59, 73, 79, 101, 103, 109, 113, 137, 139, 151, 163, 167, 169, 191, 197, 199, 229, 241, 251, 259, 263, 269, 271, 281, 289, 293, 299, 311, 317, 319, 323, 347, 349, 367, 373, 379, 391, 401, 409, 439, 443, 449, 451, 457, 461, 469, 479, 487, 491, 499, 521, 523, 529, 533, 547, 557, 559, 563, 569, 571, 583, 587, 589, 599, 601

Offset

1,1

Links

Antti Karttunen, Table of n, a(n) for n = 1..2000

Example

19 is present as A272565(19)=5 and 5 < A020639(19)=19. (19 is right after 5 on the third row of array A255127 while on A083221 it occurs at the beginning of row 8 that starts with 19 itself).
49 is present as it occurs as the fourth number on the third row of A255127 beginning with 5: 5,  19,  35,  49, ..., thus A272565(49)=5, while in A083221 49 occurs right after 7 on row 4, thus A020639(49)=7, and 5 < 7.

Prog

(Scheme, with Antti Karttunen's IntSeq-library)
(define A276447 (MATCHING-POS 1 1 (lambda (n) (< (A272565 n) (A020639 n)))))

Crossrefs

Cf. A276448 (complement in A276437), A276347.

Cf. A020639, A272565, A192505, A083221, A255127.

Sequence in context: A006035 A104485 A276569 * A214796 A192505 A141184

Adjacent sequences: A276444 A276445 A276446 * A276448 A276449 A276450

Keyword

nonn

Author

Antti Karttunen, Sep 11 2016

Status

approved