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User:Gerhard Kirchner
Teacher of mathematics and physics at a German high school (Gymnasium). Status: retired
My contributions to OEIS:
Aug.2016: Extension and theory for sequences A160375 and A110713
Oct.2016: Formula and proof for sequence A007495
Dec.2016: Aspects of prime multiplets in A086140
Dec.2016: New sequences A279765 and A280201
Jan.2017: Formula and proof for sequence A032434
Jan.2017: Application (gear wheels) for sequence A109340
Jan.2017: Recurrence and explicit formula for sequence A187243 with derivation of formulas
Feb.2017: Formula for sequence A000008
Feb.2017: Comment on sequence A002464
Feb.2017: Comment on sequence A000212
Feb.2017: Formula for sequence A001299
Mar.2017: New sequence (symmetric arrangements of non-attacking kings) A283184
Apr.2017: New application and formula for sequence A101481
Nov. 2017: Formula concerning number walls A295928
Dec.2017: General formula for Frobenius numbers A296307
Nov.2019: New sequence (number of subsets) A329146
Jan.2020: New sequences (best approximation) A331101 and A331115
Jan.2020: Formula (cont. fractions p<3) for sequence A320773
April.2020: Cont. fractions with constant terms A331960
April.2020: Cont. fractions with same pattern A334116
May 2020: Comment "Harmonic sequence" on A078141
July 2020: Points on a spiral A335298
July 2020: Fixed-point-free variations A336246
July 2020: New formula for the odd harmonic sequence and corrections in A092315 and several similar sequences
Sep. 2020: Generalized aspects of the harmonic sequence, new
Nov. 2020: Camel and banana problem based on the odd harmonic sequence
Dec. 2020: Number of convex polygons on a triangular grid.