74918

Appears in sequences

• Numbers k such that k and k+1 have same sum of divisors.at n=19A002961
• Numbers k such that k and k+1 have the same sum but an unequal number of divisors.at n=12A054007
• Numbers k such that k and k+1 have the same sum of squarefree divisors, or sqf(k) = sqf(k+1), where sqf(k) = A048250(k).at n=21A063964
• Numbers k such that k and k+1 have the same sum of unitary and nonunitary divisors.at n=8A064729
• Numbers k such that sigmawt(k) = sigmawt(k+1), where sigmawt(k) is the sum of the divisors of k weighted by divisor multiplicity in k.at n=9A171183
• Numbers n such that sigma(n+1) - sigma(n) = k*n for some integer k, where sigma(n) = A000203 (sum of divisors of n).at n=27A223136
• Table of consecutive numbers with the same sum of divisors.at n=38A225757
• Number of partitions p of n such that the number of parts having multiplicity 1 is a part and max(p) - min(p) is not a part.at n=48A241449
• Numbers n such that floor(antisigma(n) / sigma(n)) = floor(antisigma(n+1) / sigma(n+1)).at n=17A244666
• Numbers k such that bsigma(k) = bsigma(k+1), where bsigma(k) is the sum of the bi-unitary divisors of k (A188999).at n=35A293183
• Numbers k such that isigma(k) = isigma(k+1), where isigma(k) is the sum of the infinitary divisors of k (A049417).at n=38A306985
• Numbers k such that s(k) = s(k+1) where s(k) is the sum of unitary, squarefree divisors of k, including 1 (A092261).at n=19A327875
• Numbers k such that s(k) = s(k+1), where s(k) is the sum of recursive divisors of k (A333926).at n=18A333949
• Numbers m such that the delta(m) = abs(sigma(m+1)/(m+1) - sigma(m)/(m)) is smaller than delta(k) for all k < m.at n=25A335071
• a(n) is the number of distinct resistances that can be obtained by a network of exactly n equal resistors, but not by any network with fewer than n equal resistors.at n=12A338197
• Number k such that A033634(k) = A033634(k+1).at n=20A349224
• Numbers k such that A051378(k) = A051378(k+1).at n=19A349283
• Numbers k such that A360522(k) = A360522(k+1).at n=36A360527
• Numbers k such that k and k+1 have an equal sum of modified exponential divisors: A241405(k) = A241405(k+1).at n=36A379032
• a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units with a trapezoid filled by 3 trapezoids.at n=36A391204