18935

Appears in sequences

• a() = 1,3,... [ A037257 ], differences = 2,... [ A037258 ] and 2nd differences [ A037259 ] are disjoint and monotonic; adjoin next free number to 2nd differences unless it would produce a duplicate in which case ignore.at n=42A037257
• Gaps of 9 in sequence A038593 (lower terms).at n=16A038657
• a(n) = (n+5)^3 - n^3.at n=33A038867
• G.f.: (1+x^3+x^4+x^5+x^6+x^9)/((1-x)*(1-x^2)^2*(1-x^3)*(1-x^4)).at n=42A090491
• Row sums of triangle defined in A113820.at n=35A160968
• Total number of occurrences of the pattern 1=2=3 in all preferential arrangements (or ordered partitions) of n elements.at n=6A240798
• Indices of the start of 10 successive distinct digits in the decimal expansion of e (2.718281828...).at n=14A258166
• Number of partitions of n into 7 or more parts.at n=30A347543
• Numbers k such that k and k+1 are both terms in A377209.at n=12A377271